frank d



(No Model.)

1 F. D. GRANGER.

' "LOOK FOR FIRE ARMS.

No. 456,813. Patented July 28, 1891.

1 7 AL V I /N VE N TOR A TTOHNEYS UNITED STATES FRANK D. GRANGER,

OF NEW YORK, N. Y.

LOOK FOR FIRE-ARMS.

SPECIFICATION forming part of Letters Patent No. 456,813, dated July 28, 1891.

Application filed January 24, 1891. Serial No. 378,907. (No model.)

To wZZ whom it may concern:

Be it known that I, FRANK D. GRANGER, of the city, county, an d State of New York, have invented a new and Improved Trigger Mechanism for Guns, of which the following is a full, clear, and exact description. 7

My invention relates to improvements in trigger mechanism for guns, and especially to mechanism by whicha double-barrel gun may be operated by means of a single trigger.

The object of my invention is to produce a simple, safe, and reliable mechanism by which guns having more than one barrel may be operated by a single trigger, to produce a safetycatch by means of which the trigger mechanism may be locked so that the gun cannot be accidentally fired, to provide an indicating device which will always indicate which barrel is to be exploded, and to provide means for firing the desired barrel.

To this end my invention consists in certain features of construction and combinations of parts, which will be hereinafter described and claimed.

Reference is to be had to the accompanying drawings, forming a part of this specification, in which similar letters of reference indicate corresponding parts in all the figures.

Figure 1 is a broken vertical longitudinal section, partlyin elevation, showing the mechanism embodying my invention. Fig. 2 is a broken plan of the same. Fig. 3 is a detail plan View of the firing-disk, showing the manner in which the lock-pawls are released. Fig. a is an inverted plan of the firing-disk, and Fig. 5 is a broken detail View of the. firingdisk and one of the indicating-pins.

A is the breech of the gun, which is of th usual construction, and extendingdownward into the breech from the top is a hollow bracket a, in which is mounted vertically a pin 13, which pro] ects upward through the top of the breech, and which is normally pressed upward by a spring I), one end of which is socured to the hollow bracket and the other end to the pin. The pin B extends downward through the hollow bracket, and on the lower end of the pin is mounted loosely the firingdisk 0, which has on its top surface and near the edge a series of regularly-spaced camteeth 0, the inclined sides of which are all in the same direction, and the teeth are adapted to alternately raise the sears D and release the hammers. It will be seen by reference to Fig; 3 that the pawls are placed in relation to these teeth so that the scars will be alternately raised, and, as there are five teeth on the disk, one or the other of the sears will be raised every time the disk is moved a tenth of a revolution. The numberof teeth on the disk, however, is not material, as any desired number may be used.

To illustrate the construction of the meclr auism I have shown the sears D and D connected with a simple form of hammer and tumbler, but it is obvious that they may be connected with any of the common forms in the usual way. As shown, the hammers D are formed into tumblers at their lower ends, on which are shoulders (l and d, which are engaged by the forward ends of the sears, and the hammers are pressed forward by springs D, which are connected therewith and which are secured in the lock-case, the front ends of the scars being held in engagement with the tumblers by springs (P. It will thus be hammers in cocked position, and when the scars are raised at their rear ends by the teeth 0 their forward ends will be lowered so as to release the hammers. On the under side of the disk O are a series of cam-teeth G which radiate from the central portion of the hub, there being twice as many of these teeth as there are of the teeth on the upper surface of the disk, and the object of these teeth is to engage the trigger-arm so that when the arm is pushed forward it will re volve the disk.

A trigger E of common form is pivoted in the slot Ct on the under side of the breech in the usual manner, and is protected by the ordinary trigger-guard A and held rearward by a spring F pressing on the shoulder e of the trigger in the usual manner. The upper end of the trigger is provided with an arm or finger G, which is pivoted thereto and which extends forward and upward through a slot h in the guide H, whichis supported on the seen that the ends of the scars will engage the shoulders on the tumblersand hold the with the teeth of the disk by means ot'a curved spring h, the free end of which presses against the under side of the finger and the lower portion of which is secured to the guide II. It will thus be seen that when the trigger is pulled to fire the gun the upper end of the trigger will be thrown forward, thus pushing the finger G forward and cansing it to turn the disk 0, and when the disk is turned one of the inclined teeth will engage a sear D or D, raise the sear, and fire the gun.

- In Fig. 3 one of the scars D is shown just after it has passed a tooth O and the opposite pawl is in position to ascend the incline of a tooth, but if for any reason it is desired to tire the barrel, which will not normally be fired by a sear D D, the pin B may be pressed downward, thus carrying down the disk 0 with it, and this movement will cause the finger G to swing on its pivot or fulcrum, thus pushing the disk around one notch, so that by manipulating the pin the disk may be brought into a desired position to fire either barrel. When the disk is turned in this manner, the teeth 0 will be brought below and out of engagementwith the sears D D, so that the movement of the disk will not actuate the scars.

The disk may be locked so that the gun cannot be accidentally fired by means of the safety-catch secured in the breech behind the pin B, which catch comprises a slide-block J, held to slide in the slot a of the breech and provided with a'finger-piecej, to facilitate its adjustment, and a depending arm J, secured to the block and terminating at its lower end in a forward bend j, the bent end being adapted to enter one of the notches c of the disk 0, and it will be seen that when the bent end of the armis in engagement with the disk the disk cannot be turned. When the gun is to be used, the safety-catch may be pushed rearward, thus freeing the catch.

An indicator is used in connection with the invention to show which barrel is about to be exploded, and the indicator comprises an arm K, extending one from opposite sides of the hollow bracket a and terminating ma box K, in which is mounted a spring-pressed pins will align vertically with the teeth O on downward into the path of theteeth C on the disk, and the pins are placed so that they will alternately engage the teeth, so that when the disk is revolved first one pin will strike a tooth and then another, and the pins. will move up the inclined surfaces of the teeth and be alternately projected above the top surface of the breech, and these will thus indicate which barrel is about to be fired. If the righthand pin projects upward, it will show that the right-hand barrel is to be fired, and if the gunner wishes to fire the left-hand barrel he pushes the pin B downward once, thus causing the disk 0 to revolve the distance of one tooth in the manner described above, and the firing-disk will thus be brought into position to fire the left-hand barrel.

Having thus fully described my invention,

.1 claim as new and desire to secure'by Letters Patent I 1. A trigger mechanism for guns, comprising a revoluble disk having cam-teeth on one side to engage the lock-sears and cam-teeth on the opposite side to. engage the triggerfinger, a trigger pivoted in the breech, and a finger pivoted at one end to the trigger and having its opposite end in engagement with the teeth of the disk, substantially as described.

2. A trigger mechanism for guns, comprising a horizontal revoluble disk mounted on a vertically-movable support and provided on its upper side with teeth to engage the locksears and on its under side with a series of teeth, a trigger pivoted in the lower portion of the breech, and a finger pivoted at one end to the trigger and having its other end in engagement with the lower teeth of the firingdisk, substantially as described.

3. A trigger mechanism for guns, compris: ing a horizontally-revoluble firing-disk having cam-teeth on its uppersurface to engage the lock-sears and having a series of teeth on itsunder surface, a trigger pivoted in the breech and provided with a finger having one end pivoted to the trigger and the opposite end in engagement with the lower teeth of the firing-disk, and a guide for the finger, substantially as described.

4. A trigger mechanism for guns, comprising a revoluble .and vertically-movable disk having teeth on its upper surface to engage the lock-sears, and means for revolving said disk by the movement of the trigger, substantially as described.

5. A trigger mechanism for guns, c'ompris' ing a hollow bracket in the interior of the breech, a spring-pressed pin mounted in the bracket and projecting through the breechtop, a revoluble disk mounted on the lower end of the bracket and provided on its upper side with cam-teeth to engage the lock-sears and on its lower side with a series of teeth, a trigger pivoted in the'breech, and a finger pivoted to the trigger and extending into the path of the lower disk-teeth, substantially as described.

6. In a trigger mechanism, the combination, with the firing-disk having notches in the edge, of a safety-catch slidably mounted in the breech and having a, projecting end to Ward through the breech, substantially as deengage the disk-notches, substantially as described.

scribed.

7. Inatriggermechanism,theeombinatien, FRANK GRANGER 5 with the revolnble firing-disk having eam- \Vitnesses:

teeth thereon, of spring-pressed pins mounted JAMES FLOY QUIN,

in the path of the teeth and extending up- REED B. GRANGER. 

